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Effectus [21]
2 years ago
7

Alaina bought 2 cokes and 3 hot dogs for $5.25. Jonathan bought 1 coke and 5 hot dogs for $5.25. Write a system of equations tha

t models the situation
Mathematics
1 answer:
Sidana [21]2 years ago
5 0

Answer:2x+3y=5.25

          x+5y=5.25

Step-by-step explanation:

let x equal cokes and y equal hot dogs

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No because it is not within the shaded area
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Evaluate f(x)=7x+7 when x=-9
stealth61 [152]

Answer:

-56

Step-by-step explanation:

f(x) = 7x + 7

x = -9

We meed to plug in x = -9 into the first equation:

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We can open up the parentheses:

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7 0
3 years ago
A school teacher wants to survey students at her elementary school. She surveys 20 students from each grade level. What type of
Elan Coil [88]

Answer:

Stratified Random sampling

Step-by-step explanation:

When a random observations are selected from a number of individual groups in a particular population, the type of sampling technique is called Stratified Random sampling. Stratified Random sampling begins with the partitioning or splitting or a population into subgroups. A number of random selection are then made from each of the subgroups to form a collection of larger samples. This is different from the simple random sampling technique which makes random selection directly from a larger sample or population without prior partitioning of the population. The different grades of students represents the individual stratum from which random selections are made.

4 0
3 years ago
Ciana wants to buy a shirt that regularly cost 30$.It is on sale for 40$ off. How much is Ciana saving on the shirt?Please help
DerKrebs [107]

Answer:

I think you meant 40% off. If so...

Step-by-step explanation:

First, you have to turn 40 into a decimal - .40.

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This means you spend $18 and saved $12.

So, your final answer would be $12.

Hope this helps :)

5 0
2 years ago
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Hell me plz, and can plz explain as well
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3 years ago
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